Tape and plumb-bob target



March 19, 1929.

E. l. M EACHRON TAPE AND PLUMB BOB TARGET Filed April 5; 1928 Inventor yWM Attornqy sight rod.

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H'IAPE AND PLUMB-BOB render.

Application filed r m 5,

The present invention relates to improvements in targets to be used byengineers or surveyors and has for its principal ob ect to provide adevice that can bereadily and easily attached on the steeltape andaplumbbobstring. I

One of the important 0 jects of the present invention is to provide atarget of the above mentioned characterwhich is" formed with a sightopening through which the graduations on the tape line can be seen aswell as providing a means for enabling the surveyor to take long sightswithout the inconvenience of carrying a range pole or further object-isto provide a tarabove mentioned character which will at all times bepositive and efficient in carrying out the purposes for which it isdesigned, the same being construction, inexpensive durable. i

Other objects and advantageswill become apparent during f the follow- Astill and strong and the course 0. ing description.

In the accompanying drawing, forming a part of this specification, andin which like numerals indicate like parts throughout the same Figuralis a embodying my tion with respect to a measuring a plumb bob string.Figure 2-is a rear elevation thereof for more particularly disclosingthe securing means for the tape and the string. V

Figure 3 is a sectional viewtakenapprox theline '3-3 of Figure 2 looking in the directionof the arrows, and

Figure 4: is a top plan'view. 1n the drawing wherein for the purpose ofillustration is shown the .preferre embodiment of my invention, thenumeral designates generally my, improved target the same comprising abody constructed of any suitable material such aluminum, celluloid andthe like;

as metal, In the present instance, thebody is of substantially diamondformation or shape although it is to be understood'that I do not wish tolimit myself to the particular shape of the body. The body may beprovided with a flanged border as indicated at 3 in Figure 3. v

This body 2 is formed with a central transt and as, is

3 clips being like body further simple n I portion 2 that is v 1928.Serial N0. 267,651.

clearly shown in Figure 1, the front face of with the; diagonally thebody is formed opposed colored portion 5 while the other diagonallyopposed spaces are of a contrasting color vfor a purpose well known inthe art. I 1 The plate-like body is formed in its rear face with thetransversely extending channel 6 for receiving a stecl tape A- whereby aguide is provided for the slidable tape and the graduations on the tapeare visib through the sight opening The tape is held in position in thischannel or guide groove 6 by means of the spring clips 7 that extendtransversely across the channel or guide groove, each these springsecured at one end to the plateby any appropriate fastening means, whilethe tree end is bent to formfa linger engagingportion whereby saidspringclips may be moved. outwardly away from the body to facilitatethelready, and easy insertion or removal of the tape with respect to theguide channel. A'pair of these spring clips is provided as clearly shownin Figure 2.

The target is also adapted for attachment upon the plumb bob string Band to this end, the rear face of theplate-like bodyis formed atitsupperand lower end portions with longitudinally extending grooves toaccommodate the plumb bob string and suitablespring clips 8 which aresecured. atone end to the rear face of the plate-like body vextendacross the plumb bob string the respective groovesat the upper and B andlower ends of the body to retain the string in position and the freeends of the spring clips 8 are bent to form finger engaging portions. lke, it is cus- In surveying street or the tomary to ta from the he allmeasurements central line of the street in order to locate all of thelike and the most accurate way to obtain these; measurements is byholding the tape to the objectfto be located andfswinging it until acertain point on the tape edge or an arc and the line of'the transit isat a tangent therewith.

The tape holder holds a pencil onthe tape and shirts it along thetapeuntil it coincides with the line of transit' This is what is calleda 90 o'l'lset. My improved target can be readily and easily snapped onthetape and is capable of slidable movement so that .an accurate readingmay be obtained and buildings, fences, poles and the is the outerfurthermore the target can be readily and easily seen at a distant pointby the transit man. I

By attaching the plumb bob string on the target, said target can be usedin a positive manner for the purposeswell known in the art.

The simplicity of my improved target renders the same inexpensive in itsmanufacture and yet'strong and durable and at all times positive andeiiicient in carrying out the purposes for which it is designed.

WVhile I have shown the preferred embodiment of my invention, it is tobe understood that various changes in the size, shape and arrangement ofparts may be resorted to Without departing'i roni the spirit of theinvention and the scope of the appended claim.

hat I claim is As a new article of manufacture, a target comprising aplate-like body formed with a central sight opening, the rear face ofthe EDWARD MAGEAGHRON.

